Nice. You know, I have some flashcards that don't work anymore, too. That's karma.  

But my High Technology DSTTi Deluxe Cards all work. Which is somehow funny. We call them the cockroach of all flashcards.

Maybe the DSTTi team might help you. But somehow they don't read their E-Mails anymore since two years, so don't waste too much time on that... Have fun!